Angle-resolved photoelectron spectrometry of atomic chlorine using synchrotron radiation

Using synchrotron-radiation-based angle-resolved photoelectron spectrometry, the Cl 3s3${\mathit{p}}^5$ ${(}^3$ ${\mathit{P}}_{2,1,0}^{\mathit{o}}$)np and 3s3${\mathit{p}}^5$ ${(}^1$ ${\mathit{P}}_1^{\mathit{o}}$)np autoionizing Rydberg series are studied by monitoring the relative partial photoionization cross sections and asymmetry parameters of the 3${\mathit{p}}^{\mathrm{-}1}$ ${}_{}{}^3{}_{}{}^{}$ ${\mathit{P}}_{2,1,0}^{\mathit{e}}$, ${}_{}{}^1{}_{}{}^{}$ ${\mathit{D}}_2^{\mathit{e}}$, and ${}_{}{}^1{}_{}{}^{}$ ${\mathit{S}}_0^{\mathit{e}}$ ionic states between 21.75 and 27.75 eV. The Rydberg series converging upon the 3${\mathit{s}}^{\mathrm{-}1}$ ${}_{}{}^3{}_{}{}^{}$ ${\mathit{P}}_2^{\mathit{o}}$, ${}_{}{}^3{}_{}{}^{}\mathrm{P}_1^{\mathrm{o}}{}_{}{}^{}$, and ${}_{}{}^3{}_{}{}^{}$ ${\mathit{P}}_0^{\mathit{o}}$ thresholds are clearly resolved. Rydberg levels up to n=14 can be identified in the ${(}^3$ ${\mathit{P}}_{2,1,0}^{\mathit{o}}$)np series, while the ${(}^1$ ${\mathit{P}}_1^{\mathit{o}}$)np Rydberg series can be observed up to n=10.